Earlier FY GST Invoices

Due to mistake, in FY 18-19, 4 Tax Invoices were prepared with same number and same date (Inv No 73, dtd. 18.01.2019, don't use any accounting software/gst software to raise Invoices). One payment is also done against one Invoice. Receiver of material don't take input against Food Bills. Those Invoices were not taken into account while filling the GST returns. Where the same Invoice number 73 is issued on 18.01.2019 to other party and the GST return for the same was filed for the same. Now please guide what to do with those Invoices number 73 which were issued on 18.01.2019. Out of the 4 payments 3 payments are still pending from the party.